Originally Posted by
kf5nd
Don't do it. 80% of your braking power comes from your front brakes, just like in a car. Put on a front brake, if you can't do that, then don't ride it over 10 MPH in traffic. I am serious. If you get it going 20 MPH and a car pulls out in front of you, you are toast. Your stopping distances are easily triple with rear brake only. We do this exercise all the time in Road One classes, and it always works out that way.
+1
In addition to the above comments if your chain jumps off you have no brake at all except for your loud screams emitting forward from your mouth, until that rapid stop as you hit something.